For the record,
I'm in favor!
That bit of minor snark out of the way, I do think our developing technology is going to make this question gradually more irrelevant. If my choice remains between someone my age (with all that implies) and someone much younger, see above.
As our technology begins to allow us to repair age-induced damage to our bodies however, I'm going to be more attracted to someone who more fully shares my range of experience and frame of reference as a partner.